US5113172A - Angle of rotation potentiometer - Google Patents

Angle of rotation potentiometer Download PDF

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Publication number
US5113172A
US5113172A US07/444,129 US44412989A US5113172A US 5113172 A US5113172 A US 5113172A US 44412989 A US44412989 A US 44412989A US 5113172 A US5113172 A US 5113172A
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US
United States
Prior art keywords
collector
paths
contact
potentiometer
path
Prior art date
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Expired - Fee Related
Application number
US07/444,129
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English (en)
Inventor
Armin Lang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Publication date
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Assigned to ZAHNRADFABRIK FRIEDRICHSHAFEN AG reassignment ZAHNRADFABRIK FRIEDRICHSHAFEN AG ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LANG, ARMIN
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
    • H01C10/34—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path the contact or the associated conducting structure riding on collector formed as a ring or portion thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
    • G01D5/165—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance by relative movement of a point of contact or actuation and a resistive track
    • G01D5/1655—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance by relative movement of a point of contact or actuation and a resistive track more than one point of contact or actuation on one or more tracks

Definitions

  • the invention relates to a potentiometer for measuring the angle of rotation of a shaft compared with a fixed member.
  • a resistance path shaped like the arc of a circle is located on a fixed disk concentrically arranged with a collector path shaped like the arc of a circle.
  • Two elastic slide contacts are held on the shaft with a hub.
  • a second collector path must be provided. This second collector path can be provided in the same radial area of the first collector path. As a result, the measuring range would be cut in half.
  • the second collector path is located radially outside of the resistance path that is already present and the collector path, large radial dimensions results.
  • the object of the invention is to provide a potentiometer for the indicated uses that has dimensions that are as small as possible in spite of the presence of two collector paths both in the axial and the radial direction.
  • a redundant potentiometer with a measuring angle between 180°and 360°or a simple potentiometer for seamless measurement of several shaft rotations is provided that has very small radial dimensions. Since the rotating disk requires only a very small thickness, the axial measurement of the potentiometer is also no larger than that of a conventional potentiometer.
  • FIG. l shows the potentiometer according to a preferred embodiment
  • FIG. 2 shows a cross-section through the potentiometer along the line II-II in FIG. 1;
  • FIG. 3 shows a cross-section through the potentiometer long the line III-III in FIG. 1;
  • FIG. 4 shows the potentiometer according to a second embodiment
  • FIG. 5 shows a cross-section through the potentiometer, along the line V-V in FIG. 4;
  • FIG. 6 shows cross-sections through the potentiometer along the line VI-VI in FIG. 4 in different stages of manufacture.
  • the basic elements of the potentiometer according to the invention include a fixed disk 1 and a disk 3 rotating together with a shaft 2.
  • two resistance paths 4 and 5 shaped like arcs of circles are arranged on the fixed disk 1.
  • Each of the two resistance paths has a terminal contact 6 and 7 or 8 and 9 at each of its ends.
  • two more terminal contacts 10 and 11 that are connected with two slide contacts 12 and 13 are fastened to the fixed disk 1.
  • the slide contacts 12 and 13 serve the purpose of tapping the current from two collector paths 14 and 15 that are mounted on the rotating disk 3 as concentric circular paths.
  • the disk 3 rotating together with the shaft 2 is connected with the shaft 2 by three arms 16 riveted to the rotating disk 3, for example.
  • Two slide contacts 17 and 18 that are in flexible contact with the two resistance paths 4 and 5 are fastened to the rotating disk 3 in the area of the two collector paths 14 and 15.
  • the largest angle of rotation 19 of the shaft 2 measurable with this potentiometer is determined by the space required for the terminal contacts 6, 7, 8, 9, 10 and 11 and by the end positions of the slide contacts 17 and 18 in relation to the resistance paths 4 and 5 determined thereby. There the angle of rotation 19 amounts to more than 250°.
  • the two end positions of the slide contacts 17 and 18 are indicated by dash-dot lines in FIG. 2.
  • the potentiometer according to the second embodiment represented in FIG. 4 serves the purpose of measuring several steering shaft rotations by two measuring signals staggered with respect to each other.
  • a resistance path 22 shaped like a circular ring is mounted on the fixed disk 21.
  • the resistance path 22 is connected with two terminal contacts 25 and 26 at two resistance-tapping points 23 and 24 that are offset with respect to each other by 180°.
  • Two terminal contacts 27 and 28 that are connected with two slide contacts 29 and 30 are fastened to the fixed disk 21.
  • the slide contacts 29 and 30 are in contact with two collector paths 32 and 33 shaped like circular rings that are located concentrically with each other on the rotating disk 31.
  • the rotating disk 31, like the rotating disk 3 of the first embodiment, is connected with the shaft 2 by arms 34, for example.
  • FIGS. 6A to 6C the process of manufacturing the collector paths 32 and 33 on the rotating disk 31 is shown.
  • the radially outermost collector path 32 is first shown as a continuous circular ring on the rotating disk 31 that has an extension 32A that is directed radially inward.
  • an insulating layer 37 is applied to the rotating disk 31 that partially covers the collector path 32 and separates it slightly from the extension 32A.
  • the inner collector path 33 is then put on the insulating layer 37 in such a way that the inner collector path 33 is insulated from the outer collector path 32 and the extension 32A is directed radially inward.
  • the inner path 33 has an extension 33A that is also directed radially inward.
  • the two extensions 32A and 33A are in the radial area of the resistance path 22 and serve as connectors of the slide contacts 35 and 36 to the collector paths 32 and 33.
  • the operation of the potentiometer of the invention corresponds to the operation of conventional potentiometers.
  • two redundant measured values are received at the terminal contacts 10 and 11.
  • two measured values are received at the terminal contacts 27 and 28 that produce two sinusoidal lines offset by 90°with respect to each other in accordance with the rotation of the shaft.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Adjustable Resistors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
US07/444,129 1987-07-07 1988-06-30 Angle of rotation potentiometer Expired - Fee Related US5113172A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3722389 1987-07-07
DE3722389 1987-07-07

Publications (1)

Publication Number Publication Date
US5113172A true US5113172A (en) 1992-05-12

Family

ID=6331056

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/444,129 Expired - Fee Related US5113172A (en) 1987-07-07 1988-06-30 Angle of rotation potentiometer

Country Status (5)

Country Link
US (1) US5113172A (fr)
EP (1) EP0367781B1 (fr)
JP (1) JPH02504688A (fr)
DE (2) DE3874745D1 (fr)
WO (1) WO1989000331A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200747A (en) * 1990-12-13 1993-04-06 Bourns, Inc. Turn counting position sensor
US5201380A (en) * 1991-07-10 1993-04-13 Trw Inc. Phased redundant sensor steering control
US5343188A (en) * 1992-03-27 1994-08-30 Aisin Seiki Kabushiki Kaisha Slide rheostat type linear characteristic sensor
US5500634A (en) * 1993-01-29 1996-03-19 Murata Manufacturing Co., Ltd. Variable resistor
US5563571A (en) * 1994-11-21 1996-10-08 Hughes Electronics Variable resistor made using a flexprint circuit and having a rotatable substrate
US5777223A (en) * 1994-04-15 1998-07-07 Lucas Industries Public Limited Company Measuring systems for linear or angular movements
US5998892A (en) * 1995-09-05 1999-12-07 Cts Corporation Rotary position sensor with insert molded coil winding
KR100403855B1 (ko) * 2001-09-15 2003-11-03 정헌술 불감대가 없는 무한 회전 전위차계
WO2006117215A1 (fr) 2005-05-04 2006-11-09 E.G.O. Elektro-Gerätebau GmbH Dispositif de commande et procede pour evaluer un dispositif de commande
CN104567649A (zh) * 2013-10-22 2015-04-29 北京精密机电控制设备研究所 一种一体式三冗余角位移传感器
US12584725B2 (en) 2023-06-23 2026-03-24 Samson Fox GALVIN Continuous rotation angle detection sensor 360 DEG SMD

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040331A1 (de) * 1989-12-18 1991-06-20 Zahnradfabrik Friedrichshafen Drehwinkel-potentiometer
DE19718024C2 (de) 1997-04-29 2000-04-13 Siedle Horst Gmbh & Co Kg Weg-/Winkelsensor
JP2000260607A (ja) * 1999-03-11 2000-09-22 Matsushita Electric Ind Co Ltd 回転型可変抵抗器およびこれを用いた出力調整器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676822A (en) * 1971-04-08 1972-07-11 Allen Bradley Co Modular potentiometer
US3748626A (en) * 1971-08-31 1973-07-24 Fr L Electro Resistance Soc Miniaturized potentiometer
US4511879A (en) * 1982-12-10 1985-04-16 Alps Electric Co., Ltd. Slider arrangement and method of producing of the same
US4521761A (en) * 1984-02-17 1985-06-04 Sangamo Weston, Inc. Small outline potentiometer
US4523175A (en) * 1983-02-12 1985-06-11 Alps Electric Co., Ltd. Dual shaft rotary electric device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5529503B2 (fr) * 1973-06-07 1980-08-04
KR890002534B1 (ko) * 1983-04-07 1989-07-13 마쯔시다덴기산교 가부시기가이샤 회전조작식 소형 전자부품

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676822A (en) * 1971-04-08 1972-07-11 Allen Bradley Co Modular potentiometer
US3748626A (en) * 1971-08-31 1973-07-24 Fr L Electro Resistance Soc Miniaturized potentiometer
US4511879A (en) * 1982-12-10 1985-04-16 Alps Electric Co., Ltd. Slider arrangement and method of producing of the same
US4523175A (en) * 1983-02-12 1985-06-11 Alps Electric Co., Ltd. Dual shaft rotary electric device
US4521761A (en) * 1984-02-17 1985-06-04 Sangamo Weston, Inc. Small outline potentiometer

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200747A (en) * 1990-12-13 1993-04-06 Bourns, Inc. Turn counting position sensor
US5201380A (en) * 1991-07-10 1993-04-13 Trw Inc. Phased redundant sensor steering control
US5343188A (en) * 1992-03-27 1994-08-30 Aisin Seiki Kabushiki Kaisha Slide rheostat type linear characteristic sensor
US5500634A (en) * 1993-01-29 1996-03-19 Murata Manufacturing Co., Ltd. Variable resistor
US5777223A (en) * 1994-04-15 1998-07-07 Lucas Industries Public Limited Company Measuring systems for linear or angular movements
US5563571A (en) * 1994-11-21 1996-10-08 Hughes Electronics Variable resistor made using a flexprint circuit and having a rotatable substrate
US5998892A (en) * 1995-09-05 1999-12-07 Cts Corporation Rotary position sensor with insert molded coil winding
KR100403855B1 (ko) * 2001-09-15 2003-11-03 정헌술 불감대가 없는 무한 회전 전위차계
WO2006117215A1 (fr) 2005-05-04 2006-11-09 E.G.O. Elektro-Gerätebau GmbH Dispositif de commande et procede pour evaluer un dispositif de commande
US20080088407A1 (en) * 2005-05-04 2008-04-17 E.G.O. Elektro-Geraetebau Gmbh Control device and method for evaluating a control device
CN101213422B (zh) * 2005-05-04 2010-10-20 E.G.O.电气设备制造股份有限公司 控制装置
US7868271B2 (en) 2005-05-04 2011-01-11 E.G.O. Elektro-Geraetebau Gmbh Control device and method for evaluating a control device
CN104567649A (zh) * 2013-10-22 2015-04-29 北京精密机电控制设备研究所 一种一体式三冗余角位移传感器
US12584725B2 (en) 2023-06-23 2026-03-24 Samson Fox GALVIN Continuous rotation angle detection sensor 360 DEG SMD

Also Published As

Publication number Publication date
EP0367781A1 (fr) 1990-05-16
EP0367781B1 (fr) 1992-09-16
WO1989000331A1 (fr) 1989-01-12
DE3822314A1 (de) 1989-01-19
JPH02504688A (ja) 1990-12-27
DE3874745D1 (de) 1992-10-22

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Owner name: ZAHNRADFABRIK FRIEDRICHSHAFEN AG, GERMANY

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Effective date: 19891012

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Effective date: 20000512

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Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362